From cb3adc81c91b74d161960f33cf3f5b2617afff71 Mon Sep 17 00:00:00 2001
From: Gregor Harlan <mail@gh01.de>
Date: Sun, 5 Feb 2017 22:13:36 +0100
Subject: [PATCH] Make intl extension optional

---
 src/AbstractDateTime.php  | 11 +++++++++--
 src/Date.php              |  6 +++++-
 src/DateTime.php          | 14 +++++++++++---
 src/DateTimeInterface.php |  2 +-
 4 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/src/AbstractDateTime.php b/src/AbstractDateTime.php
index 5f4b11c..f25386d 100644
--- a/src/AbstractDateTime.php
+++ b/src/AbstractDateTime.php
@@ -100,9 +100,16 @@ public function formatLocalized(string $format): string
         return strftime($format, $this->getTimestamp());
     }
 
-    public function formatIntl(int $format = \IntlDateFormatter::LONG, int $timeFormat = null): string
+    public function formatIntl(int $format = null, int $timeFormat = null): string
     {
-        $formatter = new \IntlDateFormatter(\Locale::getDefault(), $format, $timeFormat ?? $format);
+        if (!class_exists(\IntlDateFormatter::class)) {
+            throw new \Exception(sprintf('%s can not be used without the intl extension.', __METHOD__));
+        }
+
+        $format = $format ?? \IntlDateFormatter::LONG;
+        $timeFormat = $timeFormat ?? $format;
+
+        $formatter = new \IntlDateFormatter(\Locale::getDefault(), $format, $timeFormat);
 
         return $formatter->format($this->getTimestamp());
     }
diff --git a/src/Date.php b/src/Date.php
index 69b77bd..7734544 100644
--- a/src/Date.php
+++ b/src/Date.php
@@ -51,8 +51,12 @@ public function formatIso(): string
         return $this->format('Y-m-d');
     }
 
-    public function formatIntl(int $format = \IntlDateFormatter::LONG, int $timeFormat = null): string
+    public function formatIntl(int $format = null, int $timeFormat = null): string
     {
+        if (!class_exists(\IntlDateFormatter::class)) {
+            throw new \Exception(sprintf('%s can not be used without the intl extension.', __METHOD__));
+        }
+
         return parent::formatIntl($format, $timeFormat ?? \IntlDateFormatter::NONE);
     }
 
diff --git a/src/DateTime.php b/src/DateTime.php
index 278447f..732bb9b 100644
--- a/src/DateTime.php
+++ b/src/DateTime.php
@@ -51,14 +51,22 @@ public function formatIsoTime(): string
         return $this->format('H:i:s');
     }
 
-    public function formatIntlDate(int $format = \IntlDateFormatter::LONG): string
+    public function formatIntlDate(int $format = null): string
     {
+        if (!class_exists(\IntlDateFormatter::class)) {
+            throw new \Exception(sprintf('%s can not be used without the intl extension.', __METHOD__));
+        }
+
         return static::formatIntl($format, \IntlDateFormatter::NONE);
     }
 
-    public function formatIntlTime(int $format = \IntlDateFormatter::LONG): string
+    public function formatIntlTime(int $format = null): string
     {
-        return static::formatIntl(\IntlDateFormatter::NONE, $format);
+        if (!class_exists(\IntlDateFormatter::class)) {
+            throw new \Exception(sprintf('%s can not be used without the intl extension.', __METHOD__));
+        }
+
+        return static::formatIntl(\IntlDateFormatter::NONE, $format ?? \IntlDateFormatter::LONG);
     }
 
     public function toDate(): Date
diff --git a/src/DateTimeInterface.php b/src/DateTimeInterface.php
index 4ca900a..f2ad9f3 100644
--- a/src/DateTimeInterface.php
+++ b/src/DateTimeInterface.php
@@ -38,7 +38,7 @@ public function formatLocalized(string $format): string;
      *
      * @return string
      */
-    public function formatIntl(int $format = \IntlDateFormatter::LONG, int $timeFormat = null): string;
+    public function formatIntl(int $format = null, int $timeFormat = null): string;
 
     /**
      * @return \DateTime